|Team|Constructor|Motorcycle|Tyres|No|Rider|Rounds|
|---|---|---|---|---|---|---|
|Camel Yamaha Team|Yamaha|Yamaha YZR-M1|M|5|Colin Edwards|All|
|Camel Yamaha Team|Yamaha|Yamaha YZR-M1|M|46|Valentino Rossi|All|
|Konica Minolta Honda|Honda|Honda RC211V|M|6|Makoto Tamada|All|
|Tech 3 Yamaha|Yamaha|Yamaha YZR-M1|D|7|Carlos Checa|All|
|Tech 3 Yamaha|Yamaha|Yamaha YZR-M1|D|77|James Ellison|All|
|Team Roberts|Team Roberts|KR211V|M|10|Kenny Roberts, Jr.|All|
|Ducati Marlboro Team|Ducati|Ducati Desmosedici GP6|B|15|Sete Gibernau|1–7, 10–11, 13–16|
|Ducati Marlboro Team|Ducati|Ducati Desmosedici GP6|B|65|Loris Capirossi|All|
|Ducati Marlboro Team|Ducati|Ducati Desmosedici GP6|B|66|Alex Hofmann|8–9, 12|
|Ducati Marlboro Team|Ducati|Ducati Desmosedici GP6|B|12|Troy Bayliss|17|
|Kawasaki Racing Team|Kawasaki|Kawasaki Ninja ZX-RR|B|17|Randy de Puniet|All|
|Kawasaki Racing Team|Kawasaki|Kawasaki Ninja ZX-RR|B|56|Shinya Nakano|All|
|Kawasaki Racing Team|Kawasaki|Kawasaki Ninja ZX-RR|B|8|Naoki Matsudo|15|
|Rizla Suzuki MotoGP|Suzuki|Suzuki GSV-R|B|21|John Hopkins|All|
|Rizla Suzuki MotoGP|Suzuki|Suzuki GSV-R|B|71|Chris Vermeulen|All|
|Rizla Suzuki MotoGP|Suzuki|Suzuki GSV-R|B|64|Kousuke Akiyoshi|15|
|Repsol Honda Team|Honda|Honda RC211V|M|26|Dani Pedrosa|All|
|Repsol Honda Team|Honda|Honda RC211V|M|69|Nicky Hayden|All|
|Honda LCR|Honda|Honda RC211V|M|27|Casey Stoner|All|
|Pramac d'Antin MotoGP|Ducati|Ducati Desmosedici GP5|D|30|José Luis Cardoso|All|
|Pramac d'Antin MotoGP|Ducati|Ducati Desmosedici GP5|D|66|Alex Hofmann|1–7, 10–11, 13–17|
|Pramac d'Antin MotoGP|Ducati|Ducati Desmosedici GP5|D|22|Iván Silva|8–9, 12|
|Fortuna Honda|Honda|Honda RC211V|M|24|Toni Elías|1–8, 10–17|
|Fortuna Honda|Honda|Honda RC211V|M|33|Marco Melandri|All|
|Fortuna Honda|Honda|Honda RC211V|M|84|Michel Fabrizio|9|
|Ilmor SRT|Ilmor|Ilmor X3|M|8|Garry McCoy|16–17|

Question: what are the total number of teams on the chart?
Answer: 12